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GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Waterfall over basalt, Haleakala National Park, Hawaii Description: Haleakala Volcano dominates east Maui. The drive along its south side passes through some beautiful scenery and offers several short hikes. This waterfall is just a few minutes from the road. Here we see moss covered basalt covered by a fine rain and mist of falling water. Location: USA ▹ Hawaii. Haleakala National Park, Maui. Tech details: 654 KB. Outcrop. The Geoscience Digital Image Library (GeoDIL) is a collection of...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Gypsum sand dunes in White Sands National Monument Description: This view shows sand dunes, made of wind-deposited gypsum, at White Sands National Monument, New Mexico. Location: USA ▹ New Mexico. Near Alamagordo. White Sands National Monument picnic area. Tech details: 293 KB. Vista. The Geoscience Digital Image Library (GeoDIL) is a collection of Earth science images primarily intended as a teaching and learning resource for K-16 educators and students. This project was initiated at the...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Limestone sea arch, south coast, Portugal Description: This photo shows a small sea arch, cut through limestone, near the southernmost point of Portugal. Location: Portugal Tech details: 462 KB. Outcrop. The Geoscience Digital Image Library (GeoDIL) is a collection of Earth science images primarily intended as a teaching and learning resource for K-16 educators and students. This project was initiated at the University of North Dakota (UND) in fall 2000. Dexter Perkins and Joseph Hartman, of...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Limestone sea stacks, south coast, Portugal Description: This view shows limestone sea stacks near the southernmost point of Portugal. Location: Portugal. Near Lagos. Tech details: 565 KB. Vista. The Geoscience Digital Image Library (GeoDIL) is a collection of Earth science images primarily intended as a teaching and learning resource for K-16 educators and students. This project was initiated at the University of North Dakota (UND) in fall 2000. Dexter Perkins and Joseph Hartman, of UND's...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Olivine mine on the Apache Indian Reservation at San Carlos, Arizona Description: Olivine, some of it in quite large near gem-quality peridot crystals, is mined from pits on the San Carlos Apache Indian Reservation, Arizona. Those who obtain special permission may get access to the pits and search for themselves. As can be seen in this photo, there is lots of green olivine. Large crystals, however, are sometimes a bit difficult to find because the area has been well picked over. Location: USA...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Searching for olivine at San Carlos, Arizona Description: Olivine, some of it in quite large near gem-quality peridot crystals, is mined from pits on the San Carlos Apache Indian Reservation, Arizona. Those who obtain special permission may get access to the pits and search for themselves. As can be seen in this photo, there is lots of green olivine. Large crystals, however, are sometimes a bit difficult to find because the area has been well picked over. Location: USA ▹ Arizona. Near San...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Mud cracks, Joshua Tree National Park, California Description: This view shows newly formed mud cracks in Joshua Tree National Park, California. Location: USA ▹ California. Near Joshua Tree. Joshua Tree National Park. Tech details: 625 KB. Outcrop. The Geoscience Digital Image Library (GeoDIL) is a collection of Earth science images primarily intended as a teaching and learning resource for K-16 educators and students. This project was initiated at the University of North Dakota (UND) in fall...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Spinefex texture in ultramafic lava outcrops at Pike Hill, Monroe Township, Ontario Description: Archaean komatiites are exposed in a small hill in Monroe Township, Ontario. This classic locality is sometimes referred to as “Pike Hill”, named after a geologists who did extensive work there. It has, unfortunately, been considerably damaged by geologists with large hammers! The outcrop has many spectacular examples of spinefex textures. Chronostratigraphy: Archean. Location: Canada ▹...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Ultramafic lava outcrops at Pike Hill, Monroe Township, Ontario Description: Archaean komatiites are exposed in a small hill in Monroe Township, Ontario. This classic locality is sometimes referred to as “Pike Hill,” named after a geologists who did extensive work there. It has, unfortunately, been considerably damaged by geologists with large hammers! The outcrop has many spectacular examples of spinefex textures. Chronostratigraphy: Archean. Location: Canada ▹ Ontario. Near Noranda....
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Shield volcanoes: View of Mauna Kea (left distance) and Mauna Loa (right distance) from Maui Description: This is a view from the highest point in Haleakala National Park on Maui, east across the ocean to Hawaii’s big island. The two mountains that can be seen on the big island are Mauna Kea (left) and Mauna Loa (right). Shiled volcanoes are often so large that they are hard to photograph. Fortunately, the Hawaiian islands provide room to step back and get a large view. Location: USA ▹...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Weathered and eroded granite outcrops, Alabama Hills, near Lone Pine, California Description: The Alabama Hills are an area of weathered and eroded granite outcrops lying between Lone Pine, California, and the Sierra. The granite here is the same age as the Sierra Nevada Batholith. This area has been the backdrop for many Hollywood movies, especially cowboy flics. Location: USA ▹ California. Near Lone Pine. Tech details: 567 KB. Vista. The Geoscience Digital Image Library (GeoDIL) is a...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Erosion on the south side of Haleakala, Hawaii Description: Erosion on the south side of Haleakala, Hawaii. Location: USA ▹ Hawaii. Near Hilo. Haleakala National Park. Tech details: 193 KB. Vista. The Geoscience Digital Image Library (GeoDIL) is a collection of Earth science images primarily intended as a teaching and learning resource for K-16 educators and students. This project was initiated at the University of North Dakota (UND) in fall 2000. Dexter Perkins and Joseph Hartman, of UND's...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Conglomerate and breccia, California coast, Point Lobos State Reserve Description: At Point Lobos, fine exposures reveal turbidites. Thick sequences of sandstones, conglomerates and breccias can be seen. This view shows coarse breccia over a finer grained unit that is mostly mudstone. The field of view is about 8 feet wide. Location: USA ▹ California. Near Big Sur. Point Lobos State Reserve. Tech details: 666 KB. Outcrop. The Geoscience Digital Image Library (GeoDIL) is a collection of Earth...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Breccia, California coast, Point Lobos State Reserve Description: At Point Lobos, fine exposures reveal turbidites. Thick sequences of sandstones, conglomerates and breccias can be seen. This view shows coarse breccia over a finer grained unit that is mostly mudstone. The field of view is about 8 feet wide. Location: USA ▹ California. Near Big Sur. Point Lobos State Reserve. Tech details: 844 KB. Outcrop. The Geoscience Digital Image Library (GeoDIL) is a collection of Earth science images...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Breccia overlying sandstone, California coast, Point Lobos State Reserve, near Big Sur Description: At Point Lobos, fine exposures reveal turbidites. Thick sequences of sandstones, mudstones, conglomerates and breccias can be seen. This view shows coarse breccia over a finer grained sandstone. Location: USA ▹ California. Near Big Sur. Point Lobos State Reserve. Tech details: 831 KB. Outcrop. The Geoscience Digital Image Library (GeoDIL) is a collection of Earth science images primarily...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Looking west at South, Middle and the Grand Teton at sunrise Description: This view shows the three main peaks of the Teton group: South Teton (left), Middle Teton (center) and Grand Teton (right). The large U-shaped hanging valleys between the peaks are glacial valley. The last remaining part of the Teton Glacier can be seen to the right of the Grand Teton. Location: USA ▹ Wyoming. Near Jackson. Aerial view of Grand Teton National Park. Tech details: 801 KB. Vista. The Geoscience Digital...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Hot basalt in Hawaii Volcanoes National Park Description: Hawaii Volcanoes National Park has had nearly continuous basaltic eruptions for many years. During the past decade (1995-2005), intrepid hikers have walked out from the Chain of Craters Road to see the hot lava while it is still glowing, and where it (sometimes) enters the ocean. The flow shown here comes from the Puu Oo vent of Kilauea Volcano. The field ov view is about 6 feet across. Location: USA ▹ Hawaii. Near Hilo. Hawaii...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Hot basalt in Hawaii Volcanoes National Park Description: Hawaii Volcanoes National Park has had nearly continuous basaltic eruptions for many years. During the past decade (1995-2005), intrepid hikers have walked out from the Chain of Craters Road to see the hot lava while it is still glowing, and where it (sometimes) enters the ocean. The flow shown here comes from the Puu Oo vent of Kilauea Volcano. Location: USA ▹ Hawaii. Near Hilo. Hawaii Volcanoes National Park. Tech details: 843 KB....
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Hot basalt in Hawaii Volcanoes National Park Description: Hawaii Volcanoes National Park has had nearly continuous basaltic eruptions for many years. During the past decade (1995-2005), intrepid hikers have walked out from the Chain of Craters Road to see the hot lava while it is still glowing, and where it (sometimes) enters the ocean. The flow shown here comes from the Puu Oo vent of Kilauea Volcano. Location: USA ▹ Hawaii. Near Hilo. Hawaii Volcanoes National Park. Tech details: 969 KB....
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Hot basalt in Hawaii Volcanoes National Park Description: Hawaii Volcanoes National Park has had nearly continuous basaltic eruptions for many years. During the past decade (1995-2005), intrepid hikers have walked out from the Chain of Craters Road to see the hot lava while it is still glowing, and where it (sometimes) enters the ocean. The flow shown here comes from the Puu Oo vent of Kilauea Volcano. Location: USA ▹ Hawaii. Near Hilo. Hawaii Volcanoes National Park. Tech details: 774 KB....
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Basalt layer containing ultramafic xenoliths, Elephant Butte, New Mexico Description: This interesting basalt unit (dark layer) is about 1 meter thick. It contains abundant xenoliths of different lithologies. The most common are (mantle)lherzolites, and (crustal) granulites. The basalt cuts across the apparent bedding in the surrounding country rock, but has been described as a flow in some literature. Location: USA ▹ New Mexico. Near Truth or Consequences. Tech details: 688 KB. Outcrop. The...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Kilbourne Hole, Potrillo Volcanic Field, New Mexico Description: Kilbourne Hole is a maar volcanic crater, located 30 miles west of the Franklin mountains of El Paso, Texas, in the Potrillo Volcanic Field of Doña Ana County, New Mexico. The hole is a rare example of volcanic action without a mountainous rim. The theory of formation is that a volcanic eruption occurs in the presence of ground waters, beneath the surface of the earth. As the hot lava and magma encounter the waters, a huge bubble...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Kilbourne Hole, Potrillo Volcanic Field, New Mexico Description: Kilbourne Hole is a maar volcanic crater, located 30 miles west of the Franklin mountains of El Paso, Texas, in the Potrillo Volcanic Field of Doña Ana County, New Mexico. The hole is a rare example of volcanic action without a mountainous rim. The theory of formation is that a volcanic eruption occurs in the presence of ground waters, beneath the surface of the earth. As the hot lava and magma encounter the waters, a huge bubble...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Collecting xenoliths in the Cima Volcanic Field, California Description: Collecting xenoliths in the Cima Volcanic Field, California. Location: USA ▹ California ▹ San Bernardino. Near Las Vegas. Tech details: 519 KB. Vista. The Geoscience Digital Image Library (GeoDIL) is a collection of Earth science images primarily intended as a teaching and learning resource for K-16 educators and students. This project was initiated at the University of North Dakota (UND) in fall 2000. Dexter Perkins...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Joseph Hartman
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Cretaceous of Minnesota Description: Cretaceous of Minnesota. Location: USA ▹ Minnesota Tech details: 182 KB The Geoscience Digital Image Library (GeoDIL) is a collection of Earth science images primarily intended as a teaching and learning resource for K-16 educators and students. This project was initiated at the University of North Dakota (UND) in fall 2000. Dexter Perkins and Joseph Hartman, of UND's Department of Geology and Geological Engineering, are the Library Directors.
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Sill containing mantle xenoliths, Elephant Butte, New Mexico Description: This interesting basalt unit (dark layer) is about 1 meter thick. It contains abundant xenoliths of different lithologies. The most common are (mantle) peridotites, and (crustal) granulites. The basalt cuts across the apparent bedding in the surrounding country rock, but has been described as a flow in some literature. Pocket knife for scale. Geologic province: Rio Grande Rift. Location: USA ▹ New Mexico. Near Truth or...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Sill containing mantle xenoliths, Elephant Butte, New Mexico Description: This interesting basalt unit (dark layer) is about 1 meter thick. It contains abundant xenoliths of different lithologies. The most common are (mantle) lherzolites, and (crustal) granulites. The basalt cuts across the apparent bedding in the surrounding country rock, but has been described as a flow in some literature. Pocket knife for scale. Geologic province: Rio Grande Rift. Location: USA ▹ New Mexico. Near Truth or...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Students on fieldtrip at Joshua Tree National Park, California Description: Joshua Tree, one of the United State's newest National Parks, is located in the Mojave Desert just a few hours east of Los Angeles. The park is best known the outcrops of Mesozoic granite and for its cactus and other desert vegetation (including Joshua Trees). Chronostratigraphy: Mesozoic. Location: USA ▹ California. Near Joshua Tree. In National Park. Tech details: 88 KB. Vista. Canon Supershot S40. The Geoscience...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Granite at Joshua Tree National Park, California Description: Joshua Tree, one of the United State's newest National Parks, is located in the Mojave Desert just a few hours east of Los Angeles. The park is best known the outcrops of Mesozoic granite and for its cactus and other desert vegetation (including Joshua Trees). The granite weathers to form rounded boulders cut by cracks and crevices that form along joints. The San Andreas fault runs near Joshaus tree; this same granite crops out near...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Xenoliths at Kilbourne Hole, New Mexico Description: Kilbourne Hole is a type of volcanic feature called a maar. The maar formed by a violent, gaseous eruption about 80,000 years ago. The eruption blew much ashy debris into the air which settled to give layered deposits containing abundant xenoliths - samples from the earth's crust and mantle that were carried to the surface by the exploding magma. This photo shows xenoliths: the green specimens are a type of ultramafic rock called lherzolite,...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Kilbourne Hole, New Mexico Description: This is a view of the east side of Kilbourne Hole from the parking area at the end of the access road. Kilbourne Hole is a type of volcanic feature called a maar. Maars are broad, shallow craters that in many ways look like meteor impact craters. (In fact, that was one of the incorrrect explanations for the origin of Kilbourne Hole.) Kilbourne hole formed by a violent, gaseous eruption about 80,000 years ago. The eruption blew much ashy debris into the...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Kilbourne Hole Maar, Potrillo Volcanic Field, New Mexico Description: This is a view of the east side of Kilbourne Hole from the parking area at the end of the access road. Kilbourne Hole is a type of volcanic feature called a maar. Maars are broad, shallow craters that in many ways look like meteor impact craters. (In fact, that was one of the incorrrect explanations for the origin of Kilbourne Hole.) Kilbourne hole formed by a violent, gaseous eruption about 80,000 years ago. The eruption...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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On top of a cinder cone in the Cima Volcanic Field, California Description: This view shows the top of one of the many cinder cones in the Cima Volcanic Field, with another cone visible in the distance to the North. The volcanic eruptions that produced the cones of the Mojave National Preserve occurred between 5 and 20 million years ago when the region was the site of intense mountain building activity. The student is looking for xenoliths - inclusions of the Earth's mantle carried up in the...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Students examining migmatite outcrop at Ear Falls, Ontario Description: This spectacular outcrop, near the dam at Ear Falls Ontario, display migmatitic metasedimentary rocks. Prior to metamorphism, the rocks were interbedded graywackes and sandstone; the original comositional layers can still be distinguished dispite the metamorphism and anatexis (partial melting) that has occurred. These high-grade rocks contain abundant large garnet and cordierite porphyroblasts. Chronostratigraphy:...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Cross bedded sandstone, Red Rocks, Nevada Description: Red Rocks Canyon, just 15 minutes west of Las Vegas, provides spectacular views of red, yellow and white sandstones. The major formation is the Jurassic Navajo Sandstone, characterized in some places by massive cross beds formed when the sand was deposited in desert sand dunes. A rock climber, near the center of this photograph, provides scale. Chronostratigraphy: Jurassic. Lithostratigraphy: Navajo Sandstone. Location: USA ▹ Nevada. Near...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Joseph Hartman
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Pachydon Cuneatus Description: Pachydon Cuneatus. Tech details: 104 KB The Geoscience Digital Image Library (GeoDIL) is a collection of Earth science images primarily intended as a teaching and learning resource for K-16 educators and students. This project was initiated at the University of North Dakota (UND) in fall 2000. Dexter Perkins and Joseph Hartman, of UND's Department of Geology and Geological Engineering, are the Library Directors.
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Shannon Heinle
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Pollucite Description: Pollucite is a silicate found in lithium-rich granitic pegmatites. Pollucite's chemical formula is (Cs,Na) 2 Al 2 Si 4 O 12 ·(H 2 O). It is named after Pollux, a figure from Greek mythology and the brother of Castor, and for its common association with “castorite” (petalite). Location: USA ▹ Maine. Near Norway. Collection: University of North Dakota Mineralogy Collection #195. Tech details: 600 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Shannon Heinle
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Perthite Description: Perthite is the name given intimate intermixtures of a potassium feldspar, either microcline or orthoclase, and the sodium-rich plagioclase feldspar, albite, with potassium feldspar the predominant constituent. The main chemical formula for perthite is (K,Na)AlSi 3 O 8 . Perthite is formed when the cooling of K-feldspar causes exsolution of sodium- and potassium-rich feldspar. Collection: University of North Dakota Mineralogy Collection. Tech details: 602 KB. Hand...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Shannon Heinle
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Leucite Description: Leucite belongs to the feldspathoid group. At high temperatures, leucite is isometric and will form the isometric trapezohedron crystal form. It is one of the few minerals that forms the unique trapezohedron. At one time leucite was used as a source of potassium and aluminum. Leucites chemical formula is KAlSi 2 O 6 . The name comes from the Greek, leukos, meaning white. Collection: University of North Dakota Mineralogy Collection #3110. Tech details: 498 KB. Hand specimen....
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Shannon Heinle
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Lazurite Description: Lazurite is a silicate whose well-formed, deep blue crystals are rare and valuable. Lapis lazuli or lapis, for short, is mostly lazurite but commonly contains pyrite and calcite. The rich blue color is due to the sulfur that is inherent in the structure of lazurite. The original source in Afghanistan still produces the finest quality material. Na 3 Ca(Al 3 Si 3 O 12 )S is lazurite's chemical formula. The name comes from the Persian, lazward, meaning blue. Collection:...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Shannon Heinle
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Serpentine, var. chrysotile Description: Serpentine is a magnesium iron silicate hydroxide. Serpentine is a major rock forming mineral and is found as a constituent in many metamorphic and weather igneous rocks. It often colors many of these rocks to a green color and most rocks that have a green color probably have serpentine in some amount. Serpentine is a general name applied to several members of a polymorphic group. It has been used as a substitute for jade and is sometimes difficult to...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Shannon Heinle
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Mizzonite (scapolite) Description: Mizzonite is a pseudonym for scapolite. Scapolite is the name of a series between the sodium chloride rich mineral called marialite and the calcium carbonate rich mineral meionite. Scapolite forms in metamorphic rocks from the alteration of plagioclase feldspars. Scapolite is commonly found in stubby to long prismatic crystals. It belongs to the exclusive symmetry class called the Tetragonal Dipyramidal Class. It has the chemical formula Na 4 (Al,Si) 12 O 24...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Shannon Heinle
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Hauyne Description: Hauyne is a feldspathoid. It is found in igneous rocks low in silica and rich in alkalies. Its mineral formula is (Na,Ca) 4-8 Al 6 Si 6 (O,S) 24 (SO 4 ,Cl) 1-2 . There are many substitutions possible in this mineral formula. Hauyne was named after the French crystallographer, R. J. Hauy (1743-1822). Location: Italy. Near Rome. Collection: University of North Dakota Mineralogy Collection #1819. Tech details: 487 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm...
Topics: geology, mineralogy
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Apr 3, 2019 Shannon Heinle
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Nepheline Description: Nepheline is a major rock forming mineral and is a major component of several igneous rocks. It is a feldspathoid and there are very few natural nephelines that have the pure chemical formula of NaAlSiO 4 . Many times the sodium is variable with potassium. Nepheline comes from the Greek, nephele, meaning cloud, because it becomes clouded when put in strong acid. Location: Italy. Near Capo di Bove. Collection: University of North Dakota Mineralogy Collection #1817. Tech...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Shannon Heinle
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Petalite with quartz Description: Petalite belongs to the silicate class. It is found in granitic pegmatites. Petalite's chemical formula is LiAlSi 4 O 10 . The name petalite comes from the Greek, petalon, meaning leaf. Location: USA ▹ Massachusetts. Near Bolton. Collection: University of North Dakota Mineralogy Collection #1816. Tech details: 552 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens. The Geoscience Digital Image Library (GeoDIL) is a collection...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Shannon Heinle
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Scapolite Description: Scapolite is the name of a series between the sodium chloride rich mineral called marialite and the calcium carbonate rich mineral meionite. Scapolite forms in metamorphic rocks from the alteration of plagioclase feldspars. Scapolite is commonly found in stubby to long prismatic crystals. It belongs to the exclusive symmetry class called the Tetragonal Dipyramidal Class. It has the chemical formula Na 4 (Al,Si) 12 O 24 Cl to Ca 4 (Al,Si) 12 O 24 (CO 3 ,SO 4 ). The name...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Shannon Heinle
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Danburite Description: Danburite is a fairly unknown mineral. It is a silicate with crystals similar to topaz. Collectors who favor clear quartz will appreciate danburite's diamond-shaped cross-section and wedge like termination. Danburites chemical formula is CaB 2 (SiO 4 ) 2 . Danburite's original locality is now buried under the city of Danbury, Connecticut. Location: USA ▹ New York. Near Russel. Collection: University of North Dakota Mineralogy Collection #1699. Tech details: 254 KB. Hand...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Shannon Heinle
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Perthitic intergrowth Description: Perthite is a series of layers that occur as intergrowths in alkali feldspars that form at high temperatures and cool slowly, unmixing as they cool. Perthite is actually two minerals: an intergrowth of sodic plagioclase in K-feldspar (orthoclase or microcline). The intergrowths are commonly stringy, but they may be globular, lensoid, or other shapes. Collection: University of North Dakota Mineralogy Collection #139. Tech details: 237 KB. Hand specimen....
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Shannon Heinle
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Feldspar crystals Description: The feldspar group is a fairly large group with nearly 20 members recognized, but only nine are well known and common. Those few, however, make up the greatest percentage of minerals found in the Earth's crust. They have a rather dull to rarely vitreous luster. Crystals tend to be blocky as the picture shows. Location: USA ▹ Oregon. Oregon Mountains, west side of White Sands. Collection: Keck Structural Geology Slide Set #EB1. Tech details: 454 KB. Hand...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Shannon Heinle
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Orthoclase in granite Description: Orthoclase belongs to the feldspar group. It is a polymorph of other minerals that share the same chemistry, but have different crystal structures. Orthoclase is the main k-spar of granites and syenites that cooled moderately quickly. Twinning is common in all feldspars and Carlsbad twinning is more common in orthoclase. Orthoclase comes from the Greek, orthos, meaning “right” and, kalo, meaning “I cleave” in allusion to the mineral's right angle of...
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GeoDIL Images
Apr 3, 2019 Shannon Heinle
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Labradorite Description: Labradorite is a member of the plagioclase series of minerals. Labradorite can produce a colorful play of light across cleavage planes and in sliced sections called labradorescence. The usually intense colors range from the typical blues and violets through greens, yellows and oranges. Some rare specimens display all these colors simultaneously. The color display is from lamellar intergrowths inside the crystal. Its chemical formula is (Ca,Na)(Si,Al) 4 O 8 . Labradorite...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Shannon Heinle
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Albite with pyrite Description: Albite is a common felspar and is the “pivot” mineral of two different feldspar series. Albite is the last of the feldspars to crystallize from molten rock. All plagioclase feldspars show a type of twinning that is named after albite. Albite's chemical formula is NaAlSi 3 O 8 . The name comes from the Latin, albus, in allusion to the common color. Collection: University of North Dakota Mineralogy Collection #3105. Tech details: 450 KB. Hand specimen. Fujifilm...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Shannon Heinle
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Anorthite Description: Anorthite is an end member and one of the rarer members of the plagioclase series. The chemical formula for anorthite is CaAl 2 Si 2 O 8 . The name comes from the Greek, an + orthos, meaning “not upright” in allusion to the oblique crystals. Location: Japan ▹ Hokkaido ▹ Otaro. Near Fuggoppe. Collection: University of North Dakota Mineralogy Collection #3074. Tech details: 180 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens. The...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Shannon Heinle
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Cleavelandite Description: Cleavelandite is a variety of albite, NaAlSi 3 O 8 (sodium aluminum silicate). It is the last of the feldspars to crystallize from molten rock. Cleavelandite forms extremely thin, platy, white and sometimes very transparent crystals. Collection: University of North Dakota Mineralogy Collection #1889. Tech details: 699 KB. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens. The Geoscience Digital Image Library (GeoDIL) is a collection of Earth science...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Shannon Heinle
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Cleavelandite Description: Cleavelandite is a variety of albite, NaAlSi 3 O 8 (sodium aluminum silicate). It is the last of the feldspars to crystallize from molten rock. Cleavelandite forms extremely thin, platy, white and sometimes very transparent crystals. Collection: University of North Dakota Mineralogy Collection #1738. Tech details: 397 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens. The Geoscience Digital Image Library (GeoDIL) is a collection of...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Shannon Heinle
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Graphic granite Description: This rock typically consists of nearly parallel rodlike masses of quartz (SiO 2 ) surrounded by feldspar (XAl (1-2) Si (3-2) O 8 ). It is used as gemstones for pieces such as pendants and for fashioning ornaments, particularly relatively large ones such as bookends. It can be found anywhere where granite is. Location: Canada ▹ Ontario Collection: University of North Dakota Mineralogy Collection #1696. Tech details: 478 KB. Hand specimen. Fujifilm FinePix S1Pro...
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GeoDIL Images
Apr 3, 2019 Shannon Heinle
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Bytownite Description: Bytownite is a rare member plagioclase series of the feldspar group. Its chemical formula is (Ca,Na)(Si,Al) 4 O 8 . Bytownite by definition must contain 30-10% sodium to 70-90% calcium in the sodium/calcium position in the crystal structure. Location: USA ▹ Minnesota. Near Crystal Bay. Collection: University of North Dakota Mineralogy Collection #1693. Tech details: 460 KB. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens. The Geoscience Digital Image...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Shannon Heinle
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Albite Description: Albite is a common felspar and is the “pivot” mineral of two different feldspar series. Albite is the last of the feldspars to crystallize from molten rock. All plagioclase feldspars show a type of twinning that is named after albite. Albite's chemical formula is NaAlSi 3 O 8 . The name comes from the Latin, albus, in allusion to the common color. Location: USA ▹ Virginia. Near Ameila Courthouse. Collection: University of North Dakota Mineralogy Collection #1691. Tech...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Shannon Heinle
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Cleavelandite Description: Cleavelandite is a variety of albite, NaAlSi 3 O 8 (sodium aluminum silicate). It is the last of the feldspars to crystallize from molten rock. Cleavelandite forms extremely thin, platy, white and sometimes very transparent crystals. Location: Mexico. Near Guanojuata. Collection: University of North Dakota Mineralogy Collection #1685. Tech details: 566 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens. The Geoscience Digital Image...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Shannon Heinle
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Microcline Description: Microcline belongs to the Feldspar Group. Microcline is a common, but not a well known mineral. Some forms of microcline, such as amazonite and perthite, have been used as semi-precious stones. Microcline is a polymorph of other minerals that share the same chemistry, but have different crystal structures. Its mineral formula is KAlSi 3 O 8 . Microcline comes from the Greek mikron meaning “little” and klinein meaning “to stoop”. Location: USA ▹ Colorado. Near...
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GeoDIL Images
Apr 3, 2019 Shannon Heinle
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Microcline Description: Microcline belongs to the Feldspar Group. Microcline is a common, but not a well known mineral. Some forms of microcline, such as amazonite and perthite, have been used as semi-precious stones. Microcline is a polymorph of other minerals that share the same chemistry, but have different crystal structures. Its mineral formula is KAlSi 3 O 8 . Microcline comes from the Greek mikron meaning “little” and klinein meaning “to stoop”. Location: USA ▹ Colorado. Near...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Shannon Heinle
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Celsian with gillespite and sanbornite Description: Celsian belongs to the Feldspar Group. Celsian has the chemical formula BaAl 2 Si 2 O 8 . It was named after the Swedish astronomer and natural scientist, A. Celsius. Location: USA ▹ California ▹ Mariposa Collection: University of North Dakota Mineralogy Collection #2913. Tech details: 338 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens. The Geoscience Digital Image Library (GeoDIL) is a collection of...
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GeoDIL Images
Apr 3, 2019 Shannon Heinle
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Orthoclase with Quartz Description: Orthoclase belongs to the Feldspar group. Orthoclase is a polymorph of other minerals that share the same chemistry, but have different crystal structures. Orthoclase is the main k-spar of granites and syenites that cooled moderately quickly. Twinning is common in all feldspars and Carlsbad twinning is more common in Orthoclase. Orthoclase comes from the Greek orthos meaning “right” and kalo meaning “I cleave” in allusion to the mineral's right angle...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Shannon Heinle
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Hyalophane with muscovite Description: Hyalophane is a member of the feldspar group. It is found in magmatic and contact metamorphic enviroments. Hyalophanes chemical formula is (K,Ba)Al(Si,Al) 3 O 8 . Its name comes from the Greek hyalos meaning “glass” and phanos meaning “to appear”. Location: USA ▹ Maine. Near Stoneham. Collection: University of North Dakota Mineralogy Collection #1655. Tech details: 346 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 City of Grand Forks
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Grand Forks Greenway Project-Regeneration near Riverside Park, Grand Forks County, North Dakota Description: Natural Regeneration site near Riverside Park in Grand Forks, North Dakota. This area has been left in its natural state since the flood event of 1997, allowing many native riparian plant species to reintroduce themselves. This is one of several natural regeneration sites, which can be found throughout the Grand Forks Greenway. Location: USA ▹ ND ▹ Grand Forks. Near Grand Forks. On...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 City of Grand Forks
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Grand Forks Greenway Project-Regeneration near Riverside Park, Grand Forks County, North Dakota Description: Natural Regeneration site near Riverside Park in Grand Forks, North Dakota. This area has been left in its natural state since the flood event of 1997, allowing many native riparian plant species to reintroduce themselves. This is one of several natural regeneration sites, which can be found throughout the Grand Forks Greenway. Location: USA ▹ North Dakota ▹ Grand Forks. Near Grand...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Shannon Heinle
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Manganophyllite with quartz Description: Manganophyllite is a silicate from the mica group. It is a variaty of biotite that has a consideral amount of manganesse. The chemical formula for manganophyllite is K(Mn,Mg,Al) 2-3 (Al,Si) 4 O 10 (OH) 2 . Location: USA ▹ Minnesota Collection: University of North Dakota Mineralogy Collection #1452. Tech details: 527 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens. The Geoscience Digital Image Library (GeoDIL) is a...
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GeoDIL Images
Apr 3, 2019 City of Grand Forks
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Grand Forks Greenway Project-Riverside Dam, Grand Forks County, North Dakota Description: The Riverside Dam has been modified from a low-head dam to a rock dam. The dam is located north of Riverside Park in Grand Forks, North Dakota. The low-head dam was modified in the summer of 2001 primarily for safety concerns. Other advantages of the modificiation include improved upstream fish passage and erosion reduction. The curved shape of the dam channels water toward the center of the river. The...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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View across Death Valley to alluvial fan on west side,Furnance Creek Area Description: View across Death Valley to alluvial fan on west side, Furnance Creek Area. Location: USA ▹ California. Near Death Valley. Collection: E451202991V. Tech details: 309 KB. Vista. Canon Eos Rebel, 55mm lens, Kodak Ektachrome Elite. The Geoscience Digital Image Library (GeoDIL) is a collection of Earth science images primarily intended as a teaching and learning resource for K-16 educators and students. This...
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GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Death Valley National Park from Daunte's View Description: Death Valley National Park from Daunte's View. Location: USA ▹ California. Near Death Valley. Collection: E451202991V. Tech details: 440 KB. Vista. Canon Eos Rebel, 55mm lens, Kodak Ektachrome Elite. The Geoscience Digital Image Library (GeoDIL) is a collection of Earth science images primarily intended as a teaching and learning resource for K-16 educators and students. This project was initiated at the University of North Dakota...
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GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Dry Wash, Death Valley National Park Description: Dry Wash, Death Valley National Park. Location: USA ▹ California. Near Death Valley. Collection: E451202991V. Tech details: 449 KB. Vista. Canon Eos Rebel, 55mm lens, Kodak Ektachrome Elite. The Geoscience Digital Image Library (GeoDIL) is a collection of Earth science images primarily intended as a teaching and learning resource for K-16 educators and students. This project was initiated at the University of North Dakota (UND) in fall 2000....
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Billie Mine, Death Valley National Park Description: Billie Mine, Death Valley National Park, Borax mine. Location: USA ▹ California. Near Death Valley. Collection: E451202991V. Tech details: 402 KB. Vista. Canon Eos Rebel, 55mm lens, Kodak Ektachrome Elite. The Geoscience Digital Image Library (GeoDIL) is a collection of Earth science images primarily intended as a teaching and learning resource for K-16 educators and students. This project was initiated at the University of North Dakota...
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GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Billie Mine, Death Valley National Park Description: Billie Mine, Death Valley National Park, Borax mine. Location: USA ▹ California. Near Death Valley. Collection: E451202991V. Tech details: 483 KB. Vista. Canon Eos Rebel, 55mm lens, Kodak Ektachrome Elite. The Geoscience Digital Image Library (GeoDIL) is a collection of Earth science images primarily intended as a teaching and learning resource for K-16 educators and students. This project was initiated at the University of North Dakota...
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GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Joshua Tree National Park Description: Joshua Tree National Park. Location: USA ▹ California. Near Palm Springs. Collection: E451202991V. Tech details: 392 KB. Vista. Canon Eos Rebel, 55mm lens, Kodak Ektachrome Elite. The Geoscience Digital Image Library (GeoDIL) is a collection of Earth science images primarily intended as a teaching and learning resource for K-16 educators and students. This project was initiated at the University of North Dakota (UND) in fall 2000. Dexter Perkins and...
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GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Joshua Tree National Park Description: Joshua Tree National Park. Location: USA ▹ California. Near Palm Springs. Collection: E451202991V. Tech details: 349 KB. Vista. Canon Eos Rebel, 55mm lens, Kodak Ektachrome Elite. The Geoscience Digital Image Library (GeoDIL) is a collection of Earth science images primarily intended as a teaching and learning resource for K-16 educators and students. This project was initiated at the University of North Dakota (UND) in fall 2000. Dexter Perkins and...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Joshua Tree National Park Description: Joshua Tree National Park. Location: USA ▹ California. Near Palm Springs. Collection: E451202991V. Tech details: 315 KB. Vista. Canon Eos Rebel, 55mm lens, Kodak Ektachrome Elite. The Geoscience Digital Image Library (GeoDIL) is a collection of Earth science images primarily intended as a teaching and learning resource for K-16 educators and students. This project was initiated at the University of North Dakota (UND) in fall 2000. Dexter Perkins and...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Joshua Tree National Park Description: Joshua Tree National Park. Location: USA ▹ California. Near Palm Springs. Collection: E451202991V. Tech details: 252 KB. Vista. Canon Eos Rebel, 55mm lens, Kodak Ektachrome Elite. The Geoscience Digital Image Library (GeoDIL) is a collection of Earth science images primarily intended as a teaching and learning resource for K-16 educators and students. This project was initiated at the University of North Dakota (UND) in fall 2000. Dexter Perkins and...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Granite Boulders, Joshua Tree National Park Description: Granite Boulders, Joshua Tree National Park. Location: USA ▹ California. Near Palm Springs. Collection: E441130991V. Tech details: 548 KB. Vista. Canon Eos Rebel, 55mm lens, Kodak Ektachrome Elite. The Geoscience Digital Image Library (GeoDIL) is a collection of Earth science images primarily intended as a teaching and learning resource for K-16 educators and students. This project was initiated at the University of North Dakota (UND)...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Granite Boulders, Joshua Tree National Park Description: Granite Boulders, Joshua Tree National Park. Location: USA ▹ California. Near Palm Springs. Collection: E441130991V. Tech details: 365 KB. Vista. Canon Eos Rebel, 55mm lens, Kodak Ektachrome Elite. The Geoscience Digital Image Library (GeoDIL) is a collection of Earth science images primarily intended as a teaching and learning resource for K-16 educators and students. This project was initiated at the University of North Dakota (UND)...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Granite outcrop, Joshua Tree National Park Description: Granite outcrop, Joshua Tree National Park. Location: USA ▹ California. Near Palm Springs. Collection: E441130991V. Tech details: 357 KB. Vista. Canon Eos Rebel, 55mm lens, Kodak Ektachrome Elite. The Geoscience Digital Image Library (GeoDIL) is a collection of Earth science images primarily intended as a teaching and learning resource for K-16 educators and students. This project was initiated at the University of North Dakota (UND) in...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Folded sediments, Orocopia Mountains Description: Folded sediments, Orocopia Mountains south of Joshua Tree National Park. Location: USA ▹ California. Near Palm Springs. Collection: E441130991V. Tech details: 384 KB. Vista. Canon Eos Rebel, 55mm lens, Kodak Ektachrome Elite. The Geoscience Digital Image Library (GeoDIL) is a collection of Earth science images primarily intended as a teaching and learning resource for K-16 educators and students. This project was initiated at the University of...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Folded sediments, Orocopia Mountains Description: Folded sediments, Orocopia Mountains south of Joshua Tree National Park. Location: USA ▹ California Collection: E441130991V. Tech details: 365 KB. Vista. Canon Eos Rebel, 55mm lens, Kodak Ektachrome Elite. The Geoscience Digital Image Library (GeoDIL) is a collection of Earth science images primarily intended as a teaching and learning resource for K-16 educators and students. This project was initiated at the University of North Dakota (UND)...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Views of Sultan Sea with dead fish Description: Views of Sultan Sea with dead fish. Location: USA ▹ California Tech details: 398 KB. Vista. Canon Eos Rebel, 55mm lens, Kodak Ektachrome Elite. The Geoscience Digital Image Library (GeoDIL) is a collection of Earth science images primarily intended as a teaching and learning resource for K-16 educators and students. This project was initiated at the University of North Dakota (UND) in fall 2000. Dexter Perkins and Joseph Hartman, of UND's...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Views of Sultan Sea with dead fish Description: Views of Sultan Sea with dead fish. Location: USA ▹ California Tech details: 239 KB. Vista. Canon Eos Rebel, 55mm lens, Kodak Ektachrome Elite. The Geoscience Digital Image Library (GeoDIL) is a collection of Earth science images primarily intended as a teaching and learning resource for K-16 educators and students. This project was initiated at the University of North Dakota (UND) in fall 2000. Dexter Perkins and Joseph Hartman, of UND's...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Views of Sultan Sea with dead fish Description: Views of Sultan Sea with dead fish. Location: USA ▹ California Tech details: 248 KB. Vista. Canon Eos Rebel, 55mm lens, Kodak Ektachrome Elite. The Geoscience Digital Image Library (GeoDIL) is a collection of Earth science images primarily intended as a teaching and learning resource for K-16 educators and students. This project was initiated at the University of North Dakota (UND) in fall 2000. Dexter Perkins and Joseph Hartman, of UND's...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Welded Tuff near Chiracahua Description: Welded Tuff near Chiracahua. Location: USA ▹ New Mexico. Near Chiracahua. Collection: E431129991V. Tech details: 368 KB. Vista. Canon Eos Rebel, 55mm lens, Kodak Ektachrome Elite. The Geoscience Digital Image Library (GeoDIL) is a collection of Earth science images primarily intended as a teaching and learning resource for K-16 educators and students. This project was initiated at the University of North Dakota (UND) in fall 2000. Dexter Perkins and...
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GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Weathered Granite Description: Weathered Granite near Chiracahua. Location: USA ▹ New Mexico. Near Chiracahua. Collection: E431129991V. Tech details: 775 KB. Vista. Canon Eos Rebel, 55mm lens, Kodak Ektachrome Elite. The Geoscience Digital Image Library (GeoDIL) is a collection of Earth science images primarily intended as a teaching and learning resource for K-16 educators and students. This project was initiated at the University of North Dakota (UND) in fall 2000. Dexter Perkins and Joseph...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Central Arizona Project Description: Central Arizona Project, North Phoenix. Location: USA ▹ Arizona. Near Phoenix. Collection: E431129991V. Tech details: 224 KB. Vista. Canon Eos Rebel, 55mm lens, Kodak Ektachrome Elite. The Geoscience Digital Image Library (GeoDIL) is a collection of Earth science images primarily intended as a teaching and learning resource for K-16 educators and students. This project was initiated at the University of North Dakota (UND) in fall 2000. Dexter Perkins and...
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GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Basalt at Sunset Crater Description: Basalt at Sunset Crater. Location: USA ▹ Arizona Collection: E431129991V. Tech details: 360 KB. Vista. Canon Eos Rebel, 55mm lens, Kodak Ektachrome Elite. The Geoscience Digital Image Library (GeoDIL) is a collection of Earth science images primarily intended as a teaching and learning resource for K-16 educators and students. This project was initiated at the University of North Dakota (UND) in fall 2000. Dexter Perkins and Joseph Hartman, of UND's...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Cinder cone quarry Description: Cinder cone quarry. Location: USA ▹ Arizona. Near Flagstaff. Collection: E431129991V. Tech details: 247 KB. Vista. Canon Eos Rebel, 55mm lens, Kodak Ektachrome Elite. The Geoscience Digital Image Library (GeoDIL) is a collection of Earth science images primarily intended as a teaching and learning resource for K-16 educators and students. This project was initiated at the University of North Dakota (UND) in fall 2000. Dexter Perkins and Joseph Hartman, of UND's...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Cliffs at Walnut Canyon Description: Walnut Canyon Cliff Dwellings in Kaibab Formation. Location: USA ▹ Arizona Collection: E431129991V. Tech details: 437 KB. Vista. Canon Eos Rebel, 55mm lens, Kodak Ektachrome Elite. The Geoscience Digital Image Library (GeoDIL) is a collection of Earth science images primarily intended as a teaching and learning resource for K-16 educators and students. This project was initiated at the University of North Dakota (UND) in fall 2000. Dexter Perkins and...
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GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Cliffs at Walnut Canyon Description: Cliffs at Walnut Canyon, Kanab Limestone. Location: USA ▹ Arizona. Near Kabab. Collection: E431129991V. Tech details: 455 KB. Vista. Canon Eos Rebel, 55mm lens, Kodak Ektachrome Elite. The Geoscience Digital Image Library (GeoDIL) is a collection of Earth science images primarily intended as a teaching and learning resource for K-16 educators and students. This project was initiated at the University of North Dakota (UND) in fall 2000. Dexter Perkins and...
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Apr 3, 2019 Dexter Perkins
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Walnut Canyon National Monument Description: Walnut Canyon National Monument Located in Flagstaff, AZ. Location: USA ▹ Arizona. Near Flagstaff. Collection: E421125991V. Tech details: 305 KB. Vista. Canon Eos Rebel, 55mm lens, Kodak Ektachrome Elite. The Geoscience Digital Image Library (GeoDIL) is a collection of Earth science images primarily intended as a teaching and learning resource for K-16 educators and students. This project was initiated at the University of North Dakota (UND) in...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Petrified Forest National Park Description: Petrified Forest National Park. Location: USA ▹ Arizona. 18 miles west of Navajo. Collection: E421125991V. Tech details: 429 KB. Vista. Canon Eos Rebel, 55mm lens, Kodak Ektachrome Elite. The Geoscience Digital Image Library (GeoDIL) is a collection of Earth science images primarily intended as a teaching and learning resource for K-16 educators and students. This project was initiated at the University of North Dakota (UND) in fall 2000. Dexter...
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Apr 3, 2019 Dexter Perkins
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Petrified Forest National Park Description: Petrified Forest National Park. Location: USA ▹ Arizona. 18 miles west of Navajo. Collection: E421125991V. Tech details: 523 KB. Vista. Canon Eos Rebel, 55mm lens, Kodak Ektachrome Elite. The Geoscience Digital Image Library (GeoDIL) is a collection of Earth science images primarily intended as a teaching and learning resource for K-16 educators and students. This project was initiated at the University of North Dakota (UND) in fall 2000. Dexter...
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Apr 3, 2019 Dexter Perkins
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Petrified log in Petrified Forest National Park Description: Petrified log in Petrified Forest National Park. Location: USA ▹ Arizona. 18 miles west of Navajo. Collection: E421125991V. Tech details: 393 KB. Vista. Canon Eos Rebel, 55mm lens, Kodak Ektachrome Elite. The Geoscience Digital Image Library (GeoDIL) is a collection of Earth science images primarily intended as a teaching and learning resource for K-16 educators and students. This project was initiated at the University of North...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Petrified Forest National Park Description: Petrified Forest National Park. Location: USA ▹ Arizona. 18 miles west of Navajo. Collection: E421125991V. Tech details: 474 KB. Vista. Canon Eos Rebel, 55mm lens, Kodak Ektachrome Elite. The Geoscience Digital Image Library (GeoDIL) is a collection of Earth science images primarily intended as a teaching and learning resource for K-16 educators and students. This project was initiated at the University of North Dakota (UND) in fall 2000. Dexter...
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Apr 3, 2019 Dexter Perkins
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Petroglyph National Monument Description: Petroglyph National Monument, Located in Albuquerque, NM. Location: USA ▹ New Mexico. Near Albuquerque. Collection: E421125991V. Tech details: 468 KB. Vista. Canon Eos Rebel, 55mm lens, Kodak Ektachrome Elite. The Geoscience Digital Image Library (GeoDIL) is a collection of Earth science images primarily intended as a teaching and learning resource for K-16 educators and students. This project was initiated at the University of North Dakota (UND) in...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Painted Desert Description: Painted Desert. Location: USA ▹ Arizona. 18 miles west of Navajo. Collection: E421125991V. Tech details: 360 KB. Vista. Canon Eos Rebel, 55mm lens, Kodak Ektachrome Elite. The Geoscience Digital Image Library (GeoDIL) is a collection of Earth science images primarily intended as a teaching and learning resource for K-16 educators and students. This project was initiated at the University of North Dakota (UND) in fall 2000. Dexter Perkins and Joseph Hartman, of...
Topics: geology, mineralogy
GeoDIL Images
Apr 3, 2019 Dexter Perkins
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Painted Desert Description: Painted Desert. Location: USA ▹ Arizona. 18 miles west of Navajo. Collection: E421125991V. Tech details: 240 KB. Vista. Canon Eos Rebel, 55mm lens, Kodak Ektachrome Elite. The Geoscience Digital Image Library (GeoDIL) is a collection of Earth science images primarily intended as a teaching and learning resource for K-16 educators and students. This project was initiated at the University of North Dakota (UND) in fall 2000. Dexter Perkins and Joseph Hartman, of...
Topics: geology, mineralogy